NASCAR314

Where would you find the casting number on a big block Chevy motor?
71-72 454c.i in question.

Thanks,
Tom

73 LS-4

Hey Tom,

It will be on the drivers side of the block just behind the cylinder head, I'm guessing this is for your new toy?

:cheers:
Pat Kunz

LAvetteman

Rear, by bell housing, drive side, 7 digits. Post what you find, we have references.

NASCAR314

Yes Pat, it's the motor in the "New Toy", I'm still un-ravelling the mystery!

Casting # 3999289 (or maybe 8999289)

Thanks for the location, easy to find when I know where to look.

The cast iron exhaust manifolds match up to a 1972 model Chevrolet.
(#3989310 on right and #3989343 on left)

This motor is not in a Vette, just wondering what it came out of originally.

Thanks,

73 LS-4

What a coincidence, you have the same casting I do :lol: 3999289. So it may possibly have been out of a 73 vette, when you get a chance pull a valve cover and see if it has 049 heads, if it does then there is a better chance it did come out of a 73 vette. What vin number is stamped on the block in front of the passenger side head?

:cheers:
Pat Kunz

LAvetteman

Didn't see it, here is where I look.
http://www.nastyz28.com/sbchevy/sblock.html#casting

NASCAR314

That link is for "small blocks"
Need the "Big block" info.

Pat, I'll get back to ya with the V.I.N.# and head castings when I get time to check.

Thanks,
Tom

LAvetteman

Wooops, sorry. There it is, says its a 2 bolt for car or truck.
http://www.nastyz28.com/bbcmenu.html